Hello there, @mmatthews ...
If you are still using the current (legacy) Gradebook, then you will have a bell icon next to assignments that are muted. Here are a couple Guides that should be of help to you:
If you are using the New Gradebook, the mute function has been transitioned to hiding grades. More information in thsi Guide:
I hope these resources will be of help to you, Marsha. Sing out if you have any questions...thanks!
